American Mineralogist, Volume 91, pages 710–715, 2006

New names*

ANDREW J. LOCOCK,1 PAULA C. PIILONEN,2† T. SCOTT ERCIT,2‡ RALPH ROWE,2 AND UWE KOLITSCH3

1Department of Natural History, Royal Ontario Museum, 100 Queen’s Park, Toronto, Ontario M5S 2C6, Canada 2Research Division, Canadian Museum of Nature, P.O. Box 3443, Stn. D, Ottawa, Ontario K1P 6P4, Canada 3Institut für Mineralogie und Kristallographie, Geozentrum, Universität Wien, Althanstrasse 14, A-1090 Wien,

CALCIOPETERSITE* Olomouc, northern Moravia, . It forms as a result J. Sejkora, P. Novotný, M. Novák, V. Šrein, P. Berlepsch (2005) of the weathering of chalcopyrite and other copper sulÞ des, Calciopetersite from Domašov nad Bystřicí, northern Mora- and is associated with chrysocolla, a Ce-dominant analogue via, Czech Republic, a new mineral species of the mixite of petersite-(Y), , allophane, goethite, lepidocrocite, group. Can. Mineral., 43, 1393–1400. chalcopyrite, pyrite, covellite, chalcocite and quartz. The name is derived from its composition and relationship to petersite-(Y), Calciopetersite forms translucent to transparent minute acicu- YCu6[(PO4)3](OH)6·3H2O. The holotype specimen is deposited lar crystals, up to 0.4 mm in length and 5–20 µm in width, with a in the mineralogical collection of the Natural History Museum, hexagonal outline, clustered in Þ ne radiating sprays (up to 0.1– National Museum, Prague, Czech Republic, under the number 0.5 mm). The mineral is brittle and soft (hardness not measured), P1p–20/2000. The mineral corresponds to IMA mineral no. olive green, light olive green , vitreous, nonß uorescent, 2001-004. with uneven and no observed . Calciopetersite Discussion. The atomic proportions of Si in the empirical is pleochroic, light green with yellowish tint (O) to dark green formula are misstated in the abstract and in the text of the paper; (E), uniaxial positive with ω 1.674(5) and ε > 1.739 (~1.75) in the corrected value is given above. A.J.L. Na light (590 nm). An average of eight electron microprobe CU8(OH)12(SIO4)·8H2O analyses gave K2O 0.09, CaO 4.39, CuO 51.25, Y2O3 1.61, La2O3 K. Walenta, T. Theye, T. (2005) A new copper silicate mineral 0.64, Ce2O3 1.98, Pr2O3 0.25, Nd2O3, 1.40, Dy2O3 0.33, Yb2O3 from the Clara mine, Central Black Forest. Der Erzgräber, 0.21, Bi2O3 0.09, SiO2 0.52, P2O5 20.98, As2O5 2.70, H2O (calc.) 19, 1–4 (in German with English abstract). 12.45, sum 98.89 wt%, corresponding to (Ca0.58Y0.13Ce0.11Nd0.08

La0.04K0.02 Dy0.02Pr0.01Yb0.01)Σ1.00(Cu5.90Ca0.14)Σ6.04[(PO4)2.06(PO3 The secondary mineral was found on the dumps of the Clara OH)0.65 (AsO4)0.22(SiO4)0.08]Σ3.01OH)6·3.00 H2O on the basis of 21 mine, Central Black Forest, . It forms bluish green to anions, ideally CaCu6[(PO4)2(PO3OH)](OH)6·3H2O. A single-crystal X-ray study showed the mineral to be a mem- turquoise crusts on ß uorite and quartz; the latter contains par- tially corroded galena. The crusts are Þ ne-grained, with angular ber of the mixite group: hexagonal, P63/m (inferred), a = 13.3045(18), c = 5.8711(8) Å, V = 900.0(4) Å3, but did not fragments seen at high magniÞ cation, and are partly composed permit reÞ nement of a structure model to an acceptable level of of spherulitic aggregates with a maximum diameter of 10 µm. precision. Powder diffraction data were collected with a Philips The mineral has a bluish green to turquoise streak, is translucent, APD diffractometer (3–66° 2θ, CuKα radiation) and yielded has a vitreous luster, and no discernible cleavage. The hard- reÞ ned unit cell parameters a = 13.284(4) Å, c = 5.902(4) Å, ness could not be determined accurately, but is estimated to be V = 902.0(6) Å3, and the strongest lines [d in Å (I,hkl)]: 11.51 approximately 2. The mineral is optically isotropic or weakly (100,100), 4.346 (88,210), 4.140 (46,201), 3.837 (38,300), 3.321 birefringent, nmean = 1.735 ± 0.003. The spherulitic aggregates (44,220), 3.184 (35,130), 2.888 (53,221), 2.877 (37,400), 2.510 show a radiating internal structure, with negative optical elon- gation. The optical properties infer cubic symmetry if the weak (37,140), and 1.965 (31,322). Density was not measured; Dcalc = 3.337 for the empirical formula, 3.179 g/cm3 for the idealized is considered as anomalous. formula and Z = 2. The infrared absorption spectrum (<0.05 mg Electron microprobe analyses (H2O by difference) gave CuO sample in KBr) is interpreted to be consistent with the presence 63.9, PbO 7.09, SiO2 4.15, SO3 0.52, H2O 24.34, sum 100.00 3– 2– wt%, corresponding to the empirical formula Cu8.23Pb0.33Si0.71S0.07 of H2O, PO4 , and PO3OH . Calciopetersite occurs in cavities in quartz veins at an aban- H27.67O24, on the basis of 24 O atoms. Neglecting Pb and S, the doned quarry near Domašov nad Bystřicí, 20 km northeast of idealized formula is Cu8(OH)12(SiO4)·8H2O for Z = 4, Dcalc = 3.74 g/cm3. The strongest lines of the unindexed powder pattern (57.3 mm * Before publication, marked with an asterisk were approved by the Commission on New Minerals and Mineral camera, FeKα radiation, intensities visually estimated) include Names, International Mineralogical Association. 3.04(10), 2.74(3), 2.50(0.5), 2.15(3), 1.890(1), 1.573(10). The † E-mail: [email protected] pattern shows relations to those of andradite and pyrochlore, ‡ English translations of articles are available upon request from and can be indexed on the basis of a cubic cell with a = 12.20 T.S.E. ([email protected]) Å. However, the imperfect agreement between measured and

0003-004X/06/0004–710$05.00/DOI: 10.2138/am.2006.463 710 LOCOCK ET AL.: NEW MINERAL NAMES 711 calculated d-spacings may indicate a pseudocubic cell. Lack of current IMA amphibole nomenclature (Burke and Leake 2004; suitable material precluded a full and more accurate description Can. Mineral., 42, 1881–1883); the terms ß uorpargasite, ß uor- of the mineral, and therefore the authors did not submit a proposal paragasite and F-pargasite are not to be used. A.J.L. to the CNMMN IMA. U.K. KINGSTONITE* FLUOROPARGASITE* C.J. Stanley, A.J. Criddle, J. Spratt, A.C. Roberts, J.T. Szymański,

M.V. Lupulescu, J. Rakovan, G.W. Robinson, J.M. Hughes M.D. Welch (2005) Kingstonite, (Rh,Ir,Pt)3S4, a new mineral (2005) Fluoropargasite, a new member of the calcic am- species from Yubdo, Ethiopia. Mineral. Mag., 69, 447–453. phiboles from Edenville, Orange County, New York. Can. Mineral., 43, 1423–1428. Kingstonite occurs as subhedral to anhedral, elongate, tabular inclusions between 15 and 40 µm in size in Pt-Fe alloys from Fluoropargasite occurs as stubby prismatic crystals up to 13 the Bir Bir river, Yubdo district, Wallaga province, Ethiopia. It cm in dimension. The mineral is brittle, has Mohs hardness of ~6, is opaque, has a metallic luster, black streak, is brittle with a is transparent to translucent in very thin fragments, black, gray subconchoidal fracture and one good cleavage parallel to [100]. 2 to greenish gray streak, vitreous, nonß uorescent, with perfect Indentation measurements gave VHN25 = 895 (871–920) kg/mm , {110} cleavage and a conchoidal fracture. Fluoropargasite is corresponding to a Mohs hardness of approximately 6. In plane biaxial positive, with α = 1.634(2), β = 1.642(2), γ = 1.654(2), polarized light, the mineral is pale brownish gray, has weak

2Vmeas = 68°, 2Vcalc = 79°, Y = b and Z ^ c = 24° (acute), dispersion birefringence and pleochroism, and has no internal reß ections. r > v, weak, pleochroic: X = colorless to light brown, Y = light It is weakly anisotropic, with weak to moderate rotation tints in brown, and Z = brown. An average of six electron microprobe dull gray and brown. Reß ectance percentages for Rmin and Rmax analyses of the type material gave SiO2 43.30, MgO 14.44, FeO in air (and in oil) are 47.2, 48.9 (33.2, 34.7) (470 nm), 48.4, 50.3

9.73, CaO 12.29, Al2O3 12.11, Na2O 2.88, TiO2 0.90, MnO 0.08, (34.3, 36.1) (546 nm), 49.1, 50.7 (35.0, 36.5) (589 nm), 49.8,

K2O 0.91, V2O3 0.18, Cr2O3 0.01, F 2.71, Cl 0.12, O = (F + Cl) 51.0 (35.6, 36.7) (650 nm), respectively.

– 1.17, H2O (calc.) 0.71, sum 99.20 wt%, corresponding to (Na0.75 Electron microprobe analyses [WDS, average of 20 analyses 2+ 3+ K0.17)Σ0.92(Ca1.94Na0.06)Σ2(Mg3.18 Fe 1.18Al0.50Ti0.10Fe 0.02V0.02 Mn0.01 )Σ5 on four grains (range)] gave Rh = 46.5 (46.5–46.9), Pt = 11.2

(Si6.39Al1.61)Σ8O22[F1.26(OH)0.71Cl0.03]Σ2, determined on the basis of (10.8–11.3), Ir = 16.4 (15.6–16.9), S = 25.6 (25.2–25.7), sum

13 cations and 24 anions (Schumacher 1997; Can. Mineral., 35, 99.7 wt%, corresponding to (Rh2.27Ir0.43Pt0.29)Σ2.99S4.01, based on 3+ 238–246) with Fe and OH calculated by stoichiometry, ideally 7 atoms pfu. The simpliÞ ed formula is (Rh,Ir,Pt)3S4 with Dcalc = 3 NaCa2(Mg4Al)Si6Al2O22F2. 7.52 g/cm (Z = 6).

Single crystal X-ray structure study (R1 = 0.019) showed the The of kingstonite was solved and reÞ ned mineral to be a member of the calcic amphibole subgroup of the using a 35 × 10 × 10 µm fragment to R1 = 0.0378 for 830 reß ec- amphibole group: monoclinic, space group C2/m, a = 9.8771(6), tions with Fo > 2.5σ(Fo). Kingstonite is monoclinic, C2/m, a = b = 18.041(1), c = 5.3092(3) Å, β = 105.133(1)°, V = 913.25(3) 10.4616(5), b = 10.7527(5), c = 6.2648(3) Å, β = 109.000(5)°, V Å3. Powder diffraction data were collected with a Scintag X-2 = 666.34(1) Å3, Z = 6. The strongest lines on the powder X-ray diffractometer (quartz internal standard, CuKα radiation) and diffraction pattern (114.6 mm Debye-Scherrer camera, CuKα – yielded reÞ ned unit cell parameters a = 9.879(2), b = 18.043(2), radiation, 39 lines given) include 5.23(20,111), 4.97(20,200), – – c = 5.308(1) Å, β = 105.13(1)°, V = 913.4 Å3, and the strongest 3.500(20,221), 3.156(100,310), 3.081(100,131), 2.957(90,002), – lines [d in Å (I,hkl)]: 8.44 (100,110), 3.38 (19,131), 3.28 (41,240), 2.805(40,221), 2.601(40,401), 2.471(20,400), 2.449(30,041), – – – – – – 3.13 (80,310), 3.04 (16,311), 2.810 (32,330), 2.746 (17,331), 2.353(132), 2.234(60,132), 2.000(20,242), 1.941(50,223), – – 2.706 (19,151), 2.385 (21,350), and 2.345 (41,351). Density was 1.918(40,421), 1.885(40,312), 1.871(80,441), 1.791(90,060), – – – measured by gas displacement using an AccuPyc 1330 (helium): 1.722(30,532), 1.692(30,602), 1.678(20,352), 1.656(20,203), 3 Dmeas = 3.18, Dcalc = 3.20 for the empirical formula, and 3.05 g/cm 1.631(40,441), and 1.532(70,062). The structure of kingstonite is for the ideal formula and Z = 2. unique among natural minerals, but is essentially identical to that

The type locality of ß uoropargasite is the Franklin Marble, of synthetic Rh3S4 [Beck & Hilbert (2000), Zeit. Anorganische at Edenville, Orange County, New York. It has also been identi- Allgemeine Chem., 626, 72–79] and consists of edge-sharing

Þ ed from Russell, St. Lawrence County, and Monroe, Orange RhS6 octahedra that form ribbons parallel to c, as well as Rh6

County, New York. It occurs in granulite-facies metacarbonates rings with sites coordinated by 4S+2Rh and 5S+2Rh. The RhS6 of late Precambrian age, and is associated with , actinolite, ribbons alternate with columns of Rh6 rings linked by S atoms. titanite, phlogopite and diopside. The name is for the composition Kingstonite was discovered in a 1.5 cm nugget, the type speci- and the relationship to pargasite, NaCa2(Mg4Al)Si6Al2O22(OH)2. men of “prassoite.” The sample is from the platinum deposits of The holotype specimen is deposited in the mineral collection the Yubdo district, Wallaga province, Ethiopia which cover an at the New York State Museum (NYSM 338.92). The mineral area of >30 km2. The primary PGM occur in fresh and altered corresponds to IMA mineral No. 2003-050. dunite and pyroxenite, as well as in secondary placer deposits in Discussion. Minor rounding errors in the empirical formula the Alfe, Bir Bir, and Deressa rivers. The deposits are dominated have been ignored. The composition of the type specimen is by isoferroplatinum and less tetraferroplatinum with minor PGE close to the boundary at 6.5 Si apfu between ß uoropargasite, alloys, antimonides, arsenides, and sulphides. Kingstonite oc-

NaCa2(Mg4Al)Si6Al2O22F2, and fluoro-edenite NaCa2Mg5- curs as inclusions in a Pt-Fe alloy, as either a single-phase or

Si7AlO22F2. The name ß uoropargasite is in agreement with intergrown with bowieite, ferrorhodsite, or cuprorhodsite. As- 712 LOCOCK ET AL.: NEW MINERAL NAMES sociated minerals include isoferroplatinum, tetraferroplatinum, The mineral was found in marble-hosted skarn-type orebodies Cu-bearing Pt-Fe alloy, osmium, and enriched remnants at the Ossikovo and Mogilata deposits (Madan ore district) and of osmium and laurite. The mineral is named in honor of Gordon the Govedarnika deposit (Laki district) in the central Rhodope Andrew Kingston (b. 1939), senior lecturer in the Department of Mountains, Bulgaria. Manganilvaite is invariably closely related Geology, University of Wales, College of Cardiff, Wales, U.K., to Pb-Zn-(Mn) skarns and the products of their retrograde altera- for his contribution to PGE mineralogy. Type material has been tion. It is often found replacing primary Mn-enriched clinopy- deposited at the Natural History Museum, London, U.K. (BM roxenes (hedenbergite-johannsenite) and closely associated with 2004,56) and a single-crystal and two powder mounts at the bustamite, which is often found to replace the clinopyroxenes. National Mineral Collection of Canada, Geological Survey of It is also associated with manganoan ferro-actinolite, rhodonite, Canada, Ottawa, Canada (IMA 2004-56). P.C.P. , manganoan calcite, andradite, manganoan chlo- rite, sphalerite, galena, quartz, and magnetite. The presence of MANGANILVAITE* manganilvaite is thought to indicate the evolution of retrograde, I.K. Bonev, R.D. Vassileva, N. Zotov, K. Kouzmanov (2005) hydrothermal processes from reduced to more oxidized. Man- 2+ 3+ 2+ Manganilvaite, CaFe Fe (Mn,Fe )(Si2O7)O(OH), a new ganilvaite is the Mn analogue of ilvaite with which it forms a mineral of the ilvaite group from Pb-Zn skarn deposits in continuous solid solution. The name is given for its composition the Rhodope Mountains, Bulgaria. Can. Mineral., 43,1027– and relation to other ilvaite-group minerals. Type material has 1042 been deposited in the collections of the Geological Institute, Bul- garian Academy of Sciences, SoÞ a (catalogue no. M1.2003.5-6, Manganilvaite occurs as black euhedral, striated dipyramidal IMA no. 2002-016). R.R. prismatic crystals up to 1–2 mm in length, elongated along the c-axis. The mineral is opaque, has a vitreous luster and a black PAUTOVITE * to brownish streak. It is brittle with a distinct {100} cleavage I.V. Pekov, A.A.Agakhanov, M.M. Boldyreva. V.G. Grishin, and an uneven fracture. Microindentation measurements with (2005) Pautovite, CsFe2S3, a new mineral species form the 2 (VHN100) gave a mean value of 868 kg/mm , corresponding to Lovozero alkaline complex, Kola peninsula, Russia. Can. a Mohs hardness of 5.5 to 6. Manganilvaite is opaque, gray to Mineral., 43, 965–972. bluish gray in reß ected light, with a red internal reß ection and a bluish gray to lilac brown pleochroism. It shows distinct an- Pautovite occurs as crudely prismatic to acicular crystals up to isotropism under crossed polars. Electron microprobe analyses 120 µm in length and 5 µm in thickness. The crystals are thought (average of 62 analyses) of manganilvaite from the Ossikovo to be elongated in the direction [001], and no twinning was ob- deposit (Madan ore district) gave MgO 0.48, Al2O3 0.20, SiO2 served. It is usually found as individuals, and clusters are rarely

29.65, CaO 12.62, TiO2 0.02, MnO 11.99, (FeO + Fe2O3) 40.93, observed. The mineral is relatively soft, but the exact hardness 2+ 2+ H2O 2.21, sum 98.10 corresponding to (Ca0.92Mn 0.08)(Fe 0.97Mg0.05) could not be measured due to the small crystal size. The cleav- 3+ 2+ 2+ (Fe 0.96Al0.02)(Mn 0.61Fe 0.39)(Si2.00O7)O(OH). Electron microprobe age is perfect on {110}, the fracture is splintery, and the crystals analyses (17 analyses) of manganilvaite from the Govedarnika split easily into ß exible needles. Pautovite is opaque with a dark deposit (Laki district) gave MgO 0.45, Al2O3 0.34, SiO2 29.48 steel-gray color and a very strong metallic luster, but in moist

CaO 13.06, TiO2 0.04, MnO 13.54, (FeO+Fe2O3) 39.31, H2O air, it becomes dull black. In plane polarized reß ected light, it is 2+ 2+ 2.21, sum 98.43 corresponding to (Ca0.94Mn 0.06)(Fe 0.94Mg0.05) grayish white to grey and strongly bireß ectant. It is pleochroic 3+ 2+ 2+ (Fe 0.99Al0.03)(Mn 0.71Fe 0.29)(Si1.99O7)O(OH). The ideal formula from grayish-white to grey with a slightly pinkish tint. Pautovite 2+ 3+ 2+ is CaFe Fe (Mn,Fe )(Si2O7)O(OH). The IR spectrum of the is anisotropic with no internal reß ections. Reß ectance percent- mineral has absorption bands at 3446, 1739, 1635, 1454, 1377, ages for Rmin and Rmax are 13.95, 24.6 (470 nm), 14.65, 23.45 (546 1121, 1040, 1005, 981, 950, 900, 880, 820, 700, 571, 534, 513, nm), 15.15, 24.55 (589 nm), 16.0, 27.05 (650 nm), respectively. 503, 493, 480, 449, and 424 cm–1. There were no designations Electron microprobe analyses of pautovite (16 analyses) gave K for the bands. Reß ectance percentages for Rmin and Rmax in air 0.21, Rb 1.31, Cs 36.12, Tl 0.50, Fe 33.8, S 28.85, sum 100.79 are 8.2, 9.9 (480 nm), 7.5, 9.7 (546 nm), 6.9, 9.7 (589 nm), 6.0, wt%, corresponding to (Cs0.91,Rb0.05K0.02Tl0.01)Σ0.99Fe2.02S2.99, based

9.4 (650 nm), respectively. on the sum of 6 atoms. The ideal formula is CsFe2S3, Z = 4.

Manganilvaite is monoclinic, P21/a, with unit-cell parameters Single-crystal diffraction study of pautovite was not suc- reÞ ned from powder X-ray data a = 13.025(7), b = 8.8514(5), c cessful due to the minute size and poor quality of the crystals. 3 = 5.8486(3) Å, β = 90.167(1)°, V = 674.28 Å , Z = 4, Dobs = 3.92 Pautovite is orthorhombic, Cmcm, with reÞ ned unit-cell pa- 3 3 g/cm , Dcalc = 3.93 g/cm . The strongest lines on the X-ray powder rameters from the powder diffraction pattern a = 9.477(4), b diffraction pattern (Stoe powder diffractometer, CoKα radiation, = 11.245(4), c = 5.485(2) Å, V = 584.5(6) Å3, Z = 4, D of – calc 78 lines) include 7.34(18,110), 3.901(24,211), 3.257(20,400, 311), 3.85 g/cm3. The strongest lines on the X-ray diffraction pat- – – 2.920(16,002), 2.875(85,130), 2.848(90,401,401), 2.737(27,3 tern (144.6 mm RKU camera, Mn Þ ltered FeKα radiation, – 21,321) 2.718(100,112, 112), 2.687(70,230), 2.624(15,420), 24 lines) include 4.69(30,200), 4.28(20,111), 2.981(100,221), – – – – 2.553(17,212), 2.442(33,231), 2.395(23, 122), 2.337(24,312), 2.723(40,002), 2.629(15,311), 2.003(30,312,151,421), – – 2.180(48,140), 2.111(47,322.412,412), 1.973(25,241,241,340), 1.910(60,042,060), 1.862(20,510,350), 1.785(30,402), – – 1.897(20,512), 1.716(39,720), 1.673(29,631,403,403), 1.565(40,313), 1.514(20,171,442), 1.279(20,443,224,134). Pau- – 1.635(19,251,342), 1.623(22,532,532,800), 1.527(20,820), tovite is isostructural with rasvumite KFe S , and picotpaulite – – – 2 3 1.499(35,632,641), 1.475(48,060,252,523), 1.462(28,004). TlFe2S3. They all have a rasvumite-type structure, which is found LOCOCK ET AL.: NEW MINERAL NAMES 713

in chalcogenides and halides with general formula AB2X3. members of the mixite group. Pautovite was discovered in the Palitra peralkaline pegmatite, Plumboagardite was found in an abandoned mine, Aitern- Kedykverpakjk Mountain, Lovozero alkaline complex, Kola Süd, near Schönau in the Southern Black Forest. A hydrothermal Peninsula, Russia. The Palitra is a thick lens-shaped pegmatite Pb-Zn vein with abundant chalcopyrite was the main ore body of 7 m in length and up to 1.5 m in thickness, within complex cutting through Upper Devonian schists and granite. The resul- layered urtite-foyaite-lujavrite rocks. Pautovite is an extremely tant waste dumps are a source of secondary Cu and Pb minerals. rare mineral present in the hydrothermal assemblage, typically as Plumboagardite was formed in an oxidized zone, the product an overgrowth on needle-shaped to hair-like crystals of belovite- of alteration of primary Pb, Cu, REE, and As minerals such as (Ce), but also observed on ussingite, microcline, nordite-(Ce) chalcopyrite, ß uorite, fahlore, and galena. It is associated with and bornemanite, and as inclusions in massive villiaumite in ß uorite, limonite, and quartz. The name is for its chemistry and vugs. Other minerals associated with pautovite include aegirine, relation to . Type material has been deposited at the Sta- natrosilite, sodalite, potassicarfvedsonite, serandite, ferronordite- atliches Museum für Naturkunde, Stuttgart, Germany. P.C.P. (Ce), vuonnemite, lomonosovite, vitusite-(Ce), phosinaite-(Ce), barytolamprophyllite, mangan-neptunite, manaksite, chkalovite, SELENOJALPAITE* kapustinite, kazakovite, steenstrupine-(Ce), thorosteenstrupine, L. Bindi, G. Pratesi (2005) Selenojalpaite, Ag3CuSe2, a new bario-olgite, nalipoite, sphalerite, löllingite, wurtzite, bartonite, mineral species from the Skrikerum Cu-Ag-Tl selenide chlorbartonite, and zakharovite. The mineral name is for Leonid deposit, Småland, southeastern Sweden. Can. Mineral., 43, Anatol’evich Pautov, a Russian mineralogist afÞ liated with the 1373–1377. Fersman Mineralogical Museum of Russian Academy of Sci- ences, Moscow, in recognition of his contribution to the study Selenojalpaite is typically intergrown with eucairite and ber- of minerals by physical methods, the mineralogy of alkaline zelianite to form aggregates up to several hundred micrometers pegmatites and the mineralogy of cesium. The holotype specimen across, and also occurs as anhedral to subhedral grains, up to 2 has been deposited at the Fersman Mineralogical Museum of 200 µm in length. The mineral is brittle, VHN25 = 37 kg/mm Russian Academy of Sciences, Moscow (catalogue no. 3168/1, (range 36–40), H = 4–4½, opaque, dark gray with a black streak, IMA no. 2004-005). R.R. metallic luster, an uneven fracture and no cleavage. Light gray under reß ected light, weakly to moderately bireß ectant, weakly PLUMBOAGARDITE* pleochroic from brownish gray to a slightly darker greenish K. Walenta, T. Theye (2005) Plumboagardite, a new mineral of gray, anisotropic, without characteristic rotation-tints or internal the mixite group from an occurrence in the Southern Black reß ections. Reß ectance values for randomly oriented grains (in

Forest, Germany. N. Jb. Mineral. Abh., 181, 219–222. air, SiC standard) are (R1-R2) 33.5–37.1 (471.1 nm), 31.8–35.1 (548.3 nm), 30.4–34.0 (586.6 nm), and 29.3–32.4 (652.3 nm). Plumboagardite occurs as spherulitic aggregates up to 0.12 An average of Þ fteen electron microprobe analyses for the same mm (average 0.05 to 0.08 mm) with a radial Þ brous structure grain gave Ag 59.20, Cu 11.81, Se 29.01, (Fe, Mn, and S below consisting of acicular crystals (0.05 mm long, 2 µm thick). The detection), sum 100.02 wt%, corresponding to Ag2.99Cu1.01Se2.00 crystals are elongated along [0001]. The mineral is grass green, for six atoms, ideally Ag3CuSe2. has a greenish streak, is translucent with a vitreous luster, has a Examination by single-crystal X-ray methods revealed the Mohs hardness of 3, and does not show cleavage. It is uniaxial diffraction proÞ les to be too broad to yield a structure reÞ ne- positive, ω = 1.726(5) and ε = 1.805(5). It is soluble in dilute ment. Powder diffraction data were collected with a GandolÞ

HCl and HNO3. camera (114.6 mm, CuKα radiation) and showed the mineral to Electron microprobe analyses (average of 3 analyses) gave be tetragonal, with reÞ ned unit-cell parameters a = 8.939(1), c = 3 PbO 8.99, La2O3 1.91, Nd2O3 1.17, Ce2O3 0.96, Sm2O3 0.20, Pr2O3 11.844(2) Å, V = 946.4(2) Å ; systematic absences are consistent

0.19, Gd2O3 0.17, Dy2O3 0.10, Y2O3 0.96 CaO 1.44, CuO 40.49, with space group I41/amd. The strongest lines are [d in Å (I,hkl)]:

Fe2O3 1.54, As2O5 29.74, P2O5 0.30, SiO2 1.46, H2O (by differ- 7.14 (45,101), 4.47 (60,200), 2.891 (85,301), 2.813 (80,213), ence) 10.38, sum 100.00 wt%, corresponding to the empirical 2.552 (50,312), 2.473 (75,204), 2.426 (100,321), 2.292 (45,105), formula [Pb0.44(La0.13Nd0.08Ce0.06Pr0.01Sm0.01Gd0.01Dy0.01Y0.09)ΣREE0.40 2.162 (70,224), and 2.034 (65,215). Density was not measured; 3 Ca0.28]Σ1.12(Cu5.59Fe0.21)Σ5.80(As2.84Si0.27P0.05)Σ3.16O12(OH)6·3.33H2O Dcalc = 7.64 for the empirical formula, 7.65 g/cm for the idealized based on 12O + 6(OH). The simpliÞ ed formula is (Pb,REE,Ca) formula and Z = 8. The most closely related species is jalpaite, 3 Cu6(AsO4)3(OH)6·3H2O, Dcalc = 3.471 g/cm . Ag3CuS2. The authors suggest that selenojalpaite and jalpaite may

Plumboagardite is hexagonal, P63/m, with unit-cell param- be isotypic, but caution that not all chemically corresponding eters reÞ ned from powder X-ray diffraction data a = 13.77(2), phases in the Cu-Ag-Se-S system are isostructural. c = 5.94(1) Å, V = 975.4(2) Å3, c:a = 0.4314. The strongest The mineral occurs in a hydrothermal calcite vein in the lines on the powder X-ray diffraction pattern (57.3 mm cam- Skrikerum Cu-Ag-Tl selenide deposit, near Valdermarsvik, – era, FeKα radiation, 42 lines given) include 12.01(100,1010), Småland, southeastern Sweden; this deposit is also the type – – – – – 4.51(60,2130,1121), 4.23(40,2021), 3.60(80,2131), 3.31(50,314 locality for berzelianite (Cu Se), crookesite (Cu TlSe ) and – – – – – 2 7 4 0,3031), 2.98(60,4040,2241,0002), 2.89(40,3141,1012), eucairite (CuAgSe). Associated minerals in the vein include cop- – – – – – 2.74(50,3250,1122), 2.61(50,4150), 2.49(70,3251,2132), per, Au-Ag alloy, Se-bearing chalcopyrite, Se-bearing bornite, – – – – – 1.817(50,6170,5271,3362), 1.792(40,4262), 1.648(40,4043), berzelianite, covellite, umangite, athabascaite, klockmannite, – and 1.485(40,4263,0004). The mineral is isostructural with other ferroselite, eucairite, naumannite, Þ schesserite, crookesite, buko- 714 LOCOCK ET AL.: NEW MINERAL NAMES vite, clausthalite, Se-bearing sphalerite, Se-bearing stromeyerite, chrosite, from the 130-meter level on the eastern side of the Iron and Se-bearing chalcocite. The name is for the composition and Monarch mine, a Proterozoic sedimentary iron ore deposit in the the relationship to jalpaite, Ag3CuS2. Type material is deposited Middleback Ranges, at Iron in the mineralogical collection of the Museo di Storia Naturale, Knob, South . , , , Università di Firenze, , under catalogue number 1768/I. The rhodochrosite, barite, and are found in mineral corresponds to IMA mineral No. 2004-48. close association with waterhouseite. Metaswitzerite, , Discussion. The reß ectance values listed above are given , collinsite, pyrobelonite, and a new, at wavelengths within 3 nm of the four standard wavelengths unnamed hexagonal calcium– carbonate– recommended by the IMA Commission on Ore Mineralogy: 470, have been noted from the immediate area of the open cut, but not 546, 589, and 650 nm. A.J.L. in direct association with the mineral. Waterhouseite was noted in Pring et al. (2000; Aust. J. Mineral., 6, 9–23) as an unidentiÞ ed WATERHOUSEITE* phase designated UK02. The mineral is named after Frederick A. Pring, U. Kolitsch, W.D. Birch (2005) Description and George Waterhouse (1815–1898), Þ rst Director of the South unique crystal-structure of waterhouseite, a new hydroxy Australian Museum (Adelaide), in recognition of his contribution manganese phosphate species from the Iron Monarch de- to the preservation of the natural history of South Australia, and posit, Middleback Ranges, South Australia. Can. Mineral., celebrates the continuing work of the Waterhouse Club in their 43, 1401–1410. support of the South Australian Museum. The type specimen and additional material are deposited in the collections of the South Waterhouseite occurs as divergent sprays of bladed crystals up Australian Museum, Adelaide (SAM 28408 and 28409). The to 1.0 mm in length and elongated along [001]. Forms observed mineral corresponds to IMA mineral No. 2004–035. include {100} (dominant), {010}, {011}, and on most crystals, Discussion. The optical orientation given for waterhouseite {001}. The crystals show contact twinning on (100), and show is not consistent with its monoclinic symmetry, but refers to the pseudo-orthorhombic morphology. The mineral is brittle, H4, observed pseudo-orthorhombic morphology; a pseudo-ortho- transparent, with color ranging from resinous orange-brown to rhombic unit cell is not presented. The analytical total reported dark clove-brown, and a yellowish brown streak. The luster is for the electron microprobe analysis is erroneous; the correct pearly on cleavages and vitreous to pearly on crystal faces, frac- sum is given above. The calculated densities for the empirical ture is splintery to conchoidal, and there is a perfect cleavage on formula and for the simpliÞ ed formula Mn7(PO4)2(OH)8 reported (100) and a probable cleavage on (001). Waterhouseite is biaxial are erroneous; corrected values are given above. A.J.L. negative, with α 1.730(3), β ~1.738, γ 1.738(4), 2V not measured but inferred to be close to 0°, X = b, Y = a and Z = c, pleochroic: X pale brown, Y brown-yellow, and Z pale brown, with absorption NEW DATA Z = X > Y. An average of seven electron microprobe analyses for BOHDANOWICZITE, PD-AG-BI-TE PHASE multiple crystals gave MnO 69.70, ZnO 0.02, P2O5 17.37, As2O5

1.09, V2O5 0.50, H2O (calc.) 9.49, sum 98.17 wt%, correspond- T. Augé, R. Petrunov, L. Bailly (2005) On the origin of the PGE ing to Mn7.28[(P1.81As0.07V0.04)O4]1.92(OH)7.81O0.51 on the basis of mineralization in the Elatsite Porphyry Cu-Au deposit, Bul-

16 atoms, ideally Mn7(PO4)2(OH)8. Single crystal X-ray garia: comparison with the Baula-Nuasahi complex, India, structure study (R1 = 0.052) showed the mineral to be twinned and other alkaline PGE-rich porphyries. Can. Mineral., 43, by non-merohedry and to have an unique complex framework 1355–1372. composed of Mn(O,OH)6 octahedra and PO4 tetrahedra, which are linked by both edges and corners. Waterhouseite is mono- An Ag-Bi-Se phase with a composition similar to that of clinic, space group P21/c, a 11.364(2), b 5.570(1), c 10.455(2) bohdanowiczite (Ag2Bi2Se4) occurs in contact with merenskyite, 3 Å, β 96.61(3)°, V 657.3(2) Å . Powder diffraction data were PdTe2. Electron microprobe analysis gave Cu 1.86, Ag 20.47, collected with a Guinier-Hägg camera (100 mm, 10–90° 2θ, Pb 0.17, Fe 1.33, Bi 40.28, S 0.28, Se 33.01, Te 3.45, sum Si internal standard, CrKα radiation) and yielded reÞ ned-cell 100.85 wt%, which corresponds (on the basis of 8 atoms) to: parameters a 11.364(6), b 5.570(2), c 10.455(3) Å, β 96.61(3)°, (Ag1.71Cu0.26)Σ1.97 (Bi1.73Fe0.21Pb0.01)Σ1.95 (Se3.76Te0.24S0.08)Σ4.08. The V 657.4(2) Å3, and the strongest lines [d in Å (I,hkl)]: 4.980 copper content of the bohdanowiczite from the Elatsite deposit – (15,110), 4.436 (70,111), 3.621 (100,202), 3.069 (50,311), 2.941 falls within the range (1.60–7.37 wt% Cu) of Cu-rich bohdano- – (40,013), 2.890 (20,302), 2.842 (20,400), 2.780 (35,020), 2.718 wiczite recently reported from the Niederschlema-Alberoda – – (20,213), and 2.596 (20,004). Density was measured by suspen- U-Se-polymetallic deposit, Erzegebirge, Germany (Förster et sion in diluted Clerici solution: Dmeas 3.55(5), Dcalc 3.67 for the al. 2005; Can. Mineral., 43, 899–908). empirical formula, 3.59 g/cm3 for the ideal formula and Z 2. The An undetermined Pd-Ag-Te-Bi phase occurs in a composite single-crystal Raman spectrum is interpreted to be consistent with grain associated with merenskyite, palladoarsenide, and hessite. – 3– the presence of OH and PO4 , and Mn-O bonds. Waterhouseite Electron microprobe analysis gave Pt 0.54, Fe 0.14, Pd 19.76, Pb is not structurally related to any other mineral species. Allactite, 0.16, Cu 0.35, Sb 0.10, Se 0.23, Te 41.79, Bi 28.27, Ag 10.48,

Mn7(AsO4)2(OH)8 and raadeite, Mg7(PO4)2(OH)8, have similar sum 101.82 wt%, corresponding to (Pd0.73Ag0.38Cu0.02Pt0.01Fe0.01)Σ1.15 stoichiometries, but their structures are different. (Te1.29Bi0.53Se0.01)Σ1.83 on the basis of three atoms, and simpliÞ ed

Waterhouseite occurs in cavities in a matrix consisting of as (Pd,Ag)(Te,Bi)2. The composition given for the merenskyite, hematite, hausmannite, barite, manganoan calcite and rhodo- ideally PdTe2, with which this unidentiÞ ed phase occurs, has LOCOCK ET AL.: NEW MINERAL NAMES 715 much lower Bi (0–2.16 wt%, mean 0.56) and Ag (0–3.1 wt%, The crystal structure of diversilite-(Ce) from the type locality mean 0.4) contents. (Khibiny massif, Kola Peninsula, Russia), was re-investigated These minerals occur associated with platinum-group-ele- (see also Dokl. Akad. Nauk, 388, 64–68 and Zeits. Kristallogr., ment minerals in a magnetite–bornite–chalcopyrite assemblage 218, 392–396). Diversilite-(Ce) is shown to be twinned on (001), in the Elatsite porphyry-copper deposit, Bulgaria. A.J.L. and to have space group R32, a = 10.708(2), c = 60.073(11) Å,

ideal formula (Ba,K,Na,Ca)~11–12(REE,Fe,Th)4(Ti,Nb)6[Si6O18]4 COBALTARTHURITE (OH, O)12·nH2O, Z = 3, based on a reÞ nement of 1762 indepen- A.R. Kampf (2005) The crystal structure of cobaltarthurite from dent reß ections (F > 4σ[F]; R = 0.077). Instead of a structure

the Bou Azzer district, Morocco: the location of hosting both SiO3(OH) tetrahedra and Si3O9 triple-rings (the atoms in the arthurite structure-type. Can. Mineral., 43, origin of its name), the structure would seem to contain only

1387–1391. Si6O18 rings. The crystal structure of diversilite is described in analogy with its Nb-analogue, ilímaussite-(Ce), as consisting of 2+ 3+ Re-investigation of the structure of cobaltarthurite, Co Fe 2 three sets of (001) layers. The A layer consists of Si6O18 rings and

(AsO4)2(OH)2·4H2O, by single-crystal X-ray methods (R1 = CeO6 trigonal prisms. The O layer consists of Si6O18 rings and

0.018), showed that it is monoclinic, space group P21/c, with cell TiO5(OH) octahedra. The remaining layer, denoted A’, consists dimensions a = 10.2635(9), b = 9.7028(8), c = 5.5711(5) Å, β of a superimposition of three A layers displaced relative to each 3 3 = 94.207(1)°, V = 553.30(8) Å , Z = 2, Dcalc = 3.33 g/cm . The other by ±1/3 (a + 2b), hence the low occupancies of the Ce and data reveal the hydrogen positions in a mineral of the arthurite Si sites (2/3), and positional disorder of anions at z ~ 0.135 in group for the Þ rst time. All of the hydrogen positions were lo- the layer. T.S.E. cated, and reÞ ned with Þ xed isotropic displacement parameters, but without constraints on the O-H distances. The hydrogen PASCOITE bonding revealed is in accord with the scheme previously in- J.M. Hughes, M. Schindler, C. Francis (2005) The C2/m dis- ferred (Moore et al. 1974; Amer. Mineral., 59, 900–905) for the ordered structure of pascoite,Ca3[V10O28]·17H2O: bonding 2+ 3+ isostructural phosphate whitmoreite, Fe Fe 2 (PO4)2(OH)2·4H2O, between structural units and interstitial complexes in com- 6– with one change: OW2–H···OW1. Electron-microprobe analysis pounds containing the [V10O28] decavanadate polyanion. of crystals associated with that used in the structure analysis Can. Mineral., 43, 1387–1391. (average of 3 analyses), gave for the cations: Co 6.4, Fe 21.9,

Ca 0.2, and As 27.1 wt%, equivalent to CoO 8.14, Fe2O3 31.31, Re-investigation of the structure of pascoite,

CaO 0.28, As2O5 41.57, sum 81.30 wt%. These data yield low Ca3[V10O28]·17H2O, by single-crystal X-ray methods (R1 = cation proportions (Co0.60Fe2.17Ca0.03)Σ2.80As2 on the basis of two 0.026), showed that it is monoclinic, space group C2/m, with As apfu. Details of the electron-microprobe analysis and reasons cell dimensions a = 19.5859(6), b = 10.1405(3), c = 10.9110(3) 3 3 for the low cation total are not given. Å, β = 120.815(1)°, V = 1861.11 Å , Z = 2, Dcalc = 2.47 g/cm . Discussion. The atomic proportions of Ca and Fe given in The alternative setting of the space group (with β close to the text, (Co0.60Fe2.16Ca0.01)Σ2.77As2, are not in agreement with 90°) is I2/m, a = 10.911(3), b = 10.141(3), c = 16.844(5), β = the weight abundances presented. Recalculated proportions are 92.987(1)°. The data reveal the hydrogen bonding in the structure given above. A.J.L. for the Þ rst time. All of the hydrogen positions were located, and reÞ ned with Þ xed isotropic displacement parameters but without constraints on the O-H distances. The centrosymmetric DIVERSILITE-(CE)* and disordered description of the structure of pascoite in space S.V. Krivovichev, Y.N. Yakovenchuk (2005) Crystal structure group C2/m is preferred over a noncentrosymmetric and ordered of diversilite-(Ce). Zap. Vser. Mineral. Obshch., 134(1), model in space group C2, as the centric model has a better agree- 113–117 (in Russian, English abstract). ment index. A.J.L.